Question

remember that color is an inherited trait in beetles. which of the following is an example of natural selection?
green beetles migrate out of the population.
a storm kills more green beetles than brown beetles by chance.
green beetles migrate out of the population, and brown beetles migrate into the population.
green beetles leave more offspring than brown beetles because they are better at finding food.
green beetles and brown beetles always leave the same number of offspring.

Explanation:

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring. In the case of beetles, if green beetles leave more offspring than brown beetles because they are better at finding food (an advantage in their environment), this is an example of natural selection. Migration (green beetles migrating out or in) is gene flow, a storm killing more brown beetles than green is a random event (not selection based on adaptation), and beetles always leaving the same number of offspring regardless of color doesn't show selection.

Answer:

Green beetles leave more offspring than brown beetles because they are better at finding food.